Flexible coupling



Jan. 1, 1924 1,479,755

R. J. STOKES Patented Jan. 1, 1924.

UNITED sTATiEs 1,479,7s PATNT oFFlcl-z.

ROBERT J. STOKES, OF TRENTON, NEW J'ERSEY, ASSIGNOR T0 THERMOID RUBBER COM- PANY, OF HAMILTON TOWNSI'IIP, NEW JERSEY, A CORPORATION OF NEW JERSEY.

FLEXIBLE COUPLIG.

Application file November 22, 1921. Serial No. 517,002.

To all whom z't may concern:

Be it known that I, ROBERT J. S'roKEs, a citizen of the United States, residing in Trenton, New Jersey, have invented certain 6 Improvements in Flexible Couplings, of

which the following is a specification.

My invention relates to certain improvements in flexible couplings of vthe type in which a flexible disk is secured to the arms of two spiders, the arms of one spider alternating with those of the other Spider. One spider is secured to one shaft and the other Spider is secured to the other shaft.

The object of my invention is to stiflen and strengthen the flexible disk, which is usually of ribber and fabrio vulcanized, and to arrange the stiflening member so that it will prevent the warping of the disk when under torsional strains.

In the accompanying drawings:

Fig. 1 is a sectional view through a flexible disk illustrating my improvement, the Section being on the line 1`-1, Fig. 2;

Fig. 2 is| a sectional view on the line 2-2, Fig. 1;

Fig. 3 is a perspective view of the reinforcing member; o

Fig. 4 is a sectional view on the line 4-4, Fig. 5, illustrating a modification of the invention; j

Fig. 5 is a sectional view on the line 5-5, F ig. 4;

Fig. 6 is a sectional view showing 'two reinforcing members;

F ig. 7 is a sectional view illustrating another modification lof the invention;

Fig. 8 is a perspective view of the reinforcing member shown in Fig. 7.; and

Fig. 9 is a view illustrating the reinforcing plate made in the form of a hexagon for application to a disk having a hexagonal Outline.

Referring to the drawings, 1 is a flexible disk made, in the present instance, of fabric and 'rubber vulcanized under pressure. 2

and 3 are hubs having arms 4 and 5 respectively which are attached to the disk. The arms are alternately attached so that there will be a certain amount of flexibility of the disk between the points of attachment. 6 are bolts by which the disk issecured to the arms of the spiders. While I have shown a single disk, a series of disks may be used if desn'ed.

thin arms 9, which are perforated at 10 forl the pass-age of the securing bolts 6.

As illustrated in Fi-gs' 1, 2 and-3, the' These" arms metal section 7 has three arms. are engaged by the three bolts which secure the spider 2 to the disk. In many instances, this construction is suflicient 'to strenflthen the disk and to kee the disk from distorted when su jectedv to torsional strains. 4

In Figs. 4 and 5 is illustrateda modification in which the metal section 7a has six 'arms 9m corresponding to the arms of both spiders. These arms have suficient flexibility so as not to interfere materially with the flexibility of the disk. In both instances, the flange, or ring section, 8 extends the full width of the disl In Fig. 6 another modification-is illustratedin which lthere are two sections, each section having three arms. One section has a flange 8atprojecting towards one side of the disk and the other section has a flange 81? projecting towards the opposite side of the disk. I t

In Fig. 9 the metal section is shown hexagonal in form, but it will be understood that the Shape may be varied without-'zdeparting from the spirit of the invention.

Figs. 7 vand 8 'illustrate a reinforcing member having arms 9nr and having a flange 8c on one 'side only, the member being pressed from a single sheet of metal.

I claim: i

1. A flexible disk for couplings made of fabric 'and rubber, said disk having a' series of holes for the passage of securing bolts;

are passed vvhich secure the disk to the spiders of a eoupling.

3.. A flexible disk for couplings having an open center and a series of perforations for 5 the passage of bolt and having imbedded thei'ein a flexible metallic section flanged on both sides at the center to form a protecting ring for the inner edge of the disk, said'mei tallic section having arms extending to- Wards the periphery of the disk, said arms being perforated in line With the perforations of the disk.

ROBERT J. STOKES. 

